Home / 129,779,401.28-179,084,225.12-76,846,612.86

Finding the Fourth Proportional to 129,779,401.28, 179,084,225.12 and 76,846,612.86

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Solution

The fourth proportional to 129,779,401.28, 179,084,225.12 and 76,846,612.86 is: 106,041,605.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,779,401.28 : 179,084,225.12 = 76,846,612.86 : x
  2. Step 2: Convert to fraction form
    129,779,401.28/179,084,225.12 = 76,846,612.86/x
  3. Step 3: Cross multiply
    129,779,401.28x = 179,084,225.12 × 76,846,612.86
  4. Step 4: Simplify right side
    129,779,401.28x = 13,762,016,116,745,494
  5. Step 5: Solve for x
    x = 13,762,016,116,745,494/129,779,401.28
  6. Step 6: Final answer
    x = 106,041,605.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.